4 N. H. AGR. EXPERIMENT STATION [Bulletin 294- 



CONFORMITY TO GUARANTEE 



One brand was deficient in all of the three guaranteed 

 constituents, nitrogen, available phosphoric acid, and 

 water soluble potash. Sixteen brands were deficient in 

 hvo of the three constituents, 14 in nitrogen and potash, 

 and two in available phosphoric acid and potash. 



Thirty-one brands were found to contain less than 

 the guaranteed amount of nitrogen. The greatest de- 

 ficiency was 0.58 per cent. The average of the other 

 30 nitrogen deficiencies was 0.17 per cent. 



Twelve brands failed to meet the guarantee in avail- 

 able phosphoric acid. One brand, a tankage, was de- 

 ficient 1.93 per cent. The average of the other 11 

 deficiencies was 0.33 per cent. 



Thirty-two brands contained less potash than the 

 guarantee. The greatest deficiency was 1.25 per cent. 

 The average of the other 31 potash deficiencies was 0.33 

 per cent. 



In the tabulation of the analysis in the following 

 pages deficiencies of one-fourth of one per cent or more 

 are shown in bold-faced type. The manufacturers are 

 arranged alphabetically. The brand name is listed al- 

 phabetically or numerically by formula under the manu- 

 %cturer. 



